On the ergodicity of partially hyperbolic systems
On the Ermakov systems and nonlocal symmetries
On the evolution of continued fractions in a fixed quadratic field
On the existence of a new type of periodic and quasi-periodic orbits for twist maps of the torus
On the existence of attractors
On the existence of ergodic automorphisms in ergodic ${\mathbb Z} ^d$-actions on compact groups
On the existence of open and bi-continuing codes
On the existence of polynomial first integrals of quadratic homogeneous systems of ordinary differential equations
On the Existence of Unstable Bumps in Neural Networks
On the finite blocking property
On the finite cyclicity of open period annuli
On the finite-dimensional marginals of shift-invariant measures
On the Finiteness Property for Rational Matrices
On the first integral conjecture of Rene Thom
On the fixed homogeneous circle problem
On the flat remainder in normal forms of families of analytic planar saddles
On the Frequency of Balanced Times in Cylinder Flows
On the frequency of partial quotients of regular continued fractions
On the functional equation f(p(z))=g(q(z)), where p,q are "generalized" polynomials and f,g are meromorphic functions
On the general one-dimensional XY Model: positive and zero temperature, selection and non-selection